Table 11: Sodium chloride single crystal, Ref. [18].

Isotope/Element v(Hz) vc(Hz) q S(µm)
81Br 635 640 1 0.985
34S 1520 1525 1 0.983
32S 1640 1620 1 0.975
Al 1950 1920 1 0.974
79Br 2650 2625 2 0.977
F 2680 2726 1 0.990
Ge 2875 2852 2 0.977
18O 2890 2878 1 0.979
OR H2O 2875 1 0.979
16O 3210 3238 1 0.986
Ni 3470 3530 2 0.990
Fe 3700 3710 2 0.983
Sc 4625 4608 2 0.980
41K 5000 5058 2 0.987
39K 5370 5317 2 0.976